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	Llama 4 Maverick Meta	Qwen3.6-27B Alibaba	DeepSeek-V4-Pro DeepSeek	GPT-5.5 OpenAI
Vendor	Meta	Alibaba	DeepSeek	OpenAI
Family	Llama	Qwen	DeepSeek	GPT
Release date	2025-04-05	2026-04-22	2026-04-22	2026-04-23
Context window	1,000,000 tokens	262,144 tokens	1,000,000 tokens	400,000 tokens
Parameters	400B	27B (dense)	1.6T (49B active)	—
Modality	text, vision	text, vision, video	text	text, vision, audio
License	Llama 4 Community License	Apache-2.0	MIT	proprietary
Source	open weights	open weights	open weights	proprietary
Description	Mixture-of-experts open-weight model from Meta.	Alibaba's first dense open-weight in the 3.6 family. Strong agentic-coding scores (77.2 SWE-bench Verified, matching Claude 4.5 Opus on Terminal-Bench 2.0). Supports 201 languages and multimodal text/image/video input.	DeepSeek's flagship open-weight MoE. 1.6T parameters with 49B activated, 1M-token context, and a hybrid attention scheme (CSA + HCA) that delivers long-context inference at ~27% of V3.2's FLOPs.	OpenAI's smartest and most intuitive model — successor to GPT-5, with major coding, research, and document workflow gains. GPT-5.5 Pro variant also available for heavier reasoning.
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